Process for production of partially hydrophilized porous adsorbents

Abstract

A process for production of a partially hydrophilized absorbent is described, which comprises using, as a starting material, porous particles made of an organic compound having properties such that they are shrunk in a solvent containing water as a major component and swollen in a solvent containing an organic solvent as a major component; newly introducing functional groups to react with any one compound selected from the group consisting of compounds containing hydroxyl, amino, carboxyl, halogen or epoxy group in a solvent containing an organic solvent as a major component; and then reacting with a compound containing alcoholic OH group in a solvent containing water as a major component to immobilize the compound containing alcoholic OH group on the outer surfaces of the particles.

1. A process for production of a partially hydrophilized porous adsorbent, which comprises using, as a starting material, porous particles comprising an organic compound having properties such that they are shrunk in a solvent comprising water as a major component and swollen in a solvent comprising an organic solvent as a major component; newly introducing functional groups to react with any one compound selected from the group consisting of compounds containing hydroxyl, amino, carboxyl, halogen or epoxy group in a solvent comprising an organic solvent as a major component; and then reacting with a compound containing alcoholic OH group in a solvent comprising water as a major component to immobilize the compound containing alcoholic OH group on the outer surfaces of the particles. 
     
     
       2. The process for production of a partially hydrophilized porous adsorbent according to  claim 1 , wherein subsequent to the steps, the porous particles are allowed to react with a ligand in a mixed solvent of an organic material and water, thereby immobilizing the ligand on the inner surfaces of the particles. 
     
     
       3. The process for production of a partially hydrophilized porous adsorbent according to  claim 1 , wherein at least one of the reaction with the compound containing alcoholic OH group and the reaction with the ligand is carried out in the presence of a catalyst. 
     
     
       4. A process for production of a partially hydrophilized porous adsorbents, which comprises reacting porous particles impregnated in water-insoluble organic solvent with compounds containing alcoholic OH group in a solvent comprising water as a major component to immobilize the compound containing alcoholic OH group on the outer surface of the porous particles. 
     
     
       5. The process for production of a partially hydrophilized porous adsorbent according to  claim 4 , wherein subsequent to the steps, the porous particles are allowed to react with a ligand in a mixed solvent of an organic material and water, thereby immobilizing the ligand on the inner surfaces of the particles. 
     
     
       6. The process for production of a partially hydrophilized porous adsorbent according to  claim 4 , wherein at least one of the reaction with the compound containing alcoholic OH group and the reaction with the ligand is carried out in the presence of a catalyst. 
     
     
       7. A process for production of a partially hydrophilized porous adsorbent, which comprises using, as a starting material, porous particles comprising an organic compound having functional groups to react with any one compound selected from the group consisting of compounds containing hydroxyl, amino, carboxyl, halogen or epoxy group and having properties such that they are shrunk in a solvent comprising water as a major component and swollen in a solvent comprising an organic solvent as a major component; and reacting with a compound containing alcoholic OH group in a solvent comprising water as a major component to immobilize the compound containing alcoholic OH group on the outer surfaces of the particles. 
     
     
       8. The process for production of a partially hydrophilized porous adsorbent according to  claim 7 , wherein subsequent to the steps, the porous particles are allowed to react with a ligand in a mixed solvent of an organic material and water, thereby immobilizing the ligand on the inner surfaces of the particles. 
     
     
       9. The process for production of a partially hydrophilized porous adsorbent according to  claim 7 , wherein at least one of the reaction with the compound containing alcoholic OH group and the reaction with the ligand is carried out in the presence of a catalyst.